Fountain pen



Sept. 24, 1929. J, MUCK 1,728,944

FOUNTAIN PEN Filed Deo. 16, 1926 l I'NvENToR (MMM www@ f mM/4 ATTORNEY JOHN MUOK, or MILW Patented Sept. 24, 1929 vuNirED STATES PATENT OFFICE AUKEE, WISOONSINASSIGNOB. OF ONE-HALF rro FRANK fr.

UIBEI., OF MILWAUKEE, WISCONSIN FOUNTAIN PEN Application led December 16, 1926. Serial No. 155,137.. i

This invention relates to fountain pens.

It is an object of this invention to provide improved mechanism for filling a fountain pen with ink and for co-operating with the pen to feed the ink to the point thereof.

1t is also an object of this invention to provide for fountain pens an improved pen designed to hold a quantity of ink and to prevent leakage when'not in use. f

In the drawings:

Figure 1 is a fragmentary longitudinal sectional View of a fountain pen casing showing the interior mechanism, a portion of which is broken away.

Figure 2 is a sectional 4view taken on the line 2-2 of Figure .1, the rubber bag being removed to more clearly show the operating mechanism.

Figure 3 is a plan View of the pen proper shown in Figure 1. i

Figure 4 is a sectional View taken on the line 4-4 of Figure 3. n v

Like parts are identified by the same reference characters throughout the several views.

The fountainpen, embodying the invention disclosed herein, includes a barrel or casing 1, a pen cap 2, acompressible rubber ink bag or container 3 within the casing, and a pen 4.

The pen 4 is provided with a spoon por-` tion 5 which is preferably soldered to the pen along a portion of the adjacent straight margins 6 of the pen and spoon portion. The spoon portion 5 is contured along the margin 7 to conform to the contour of the adjacent portion of the pen 4. The margin 7 is not connected with the adjacent portion of the pen in order to permit the pen point to freely flex.

Thus a space is provided within the pen which may contain ink. The rear portion of the pen 4 and spoon portion 5 are positioned within an aperture 8 of the casing and a feed plug 9 having a feed openinglO is inserted into the opening 8 to secure the pen in position. The pen is provided with the usual slit 12 and has lugs 13 bent outwardly to provide an aperture 14. The pen shank and associated end of the spoon portion form a cylindrical barrel which receives the lower end of the feed plug 9. j

The'feed plug 9 projects into the interior of the barrel or casing l. Upon this'projecting portion' Of tlieplug is secured the neck 15 ofthe compressible rubber casing or bag`3 within the outer casing $1.' Lying adjacent the rubber bag is arod 16 having axially offset portions 17 and 18. The offset portion 17 is provided with a slotted bearing 19 in the tongue 20 projecting from theinterior 'wall of casing 1. This bearingis eccentric'to the axisofcasing 1. The odset portion 17 projects through the tongue 2O and is provided f with a lever or crank 21 which, in the position shown in Figure 1,l is substantially concentric with the casingl. j 1; 1 Oifsetportion 18'of therod 16 is substantially aligned with portion 17, is in contact with the pen 4, and'is provided with a bearing at 22 in the casing 1. Theoffset portion 18,- as shown inFigure 1,` projects beyond the barrel or ca'sing 1 and lies between the lugs 13 o-f the pen thereby to actas a. valve forV opening 14 in such pen.

.The rear'end of the casing 1 is provided with a capl 23 threaded tothe casingfor re` moval therefrom. This cap is provided upon its interior with a retaining cup 24 secured therein in any suitable manner, preferably by press fitting tothe interiorly projecting por` tion 25 of the cap 23. Retaining cup 24 is apertured axially of the cap 23 and the crank 21 of rod 16 extends through such aperture.y

Within the cup 24 and upon crank 21 is provided a washer 26 secured upon the crank in any suitable manner such as beaded end 27.'

Attention is called to the manner in which the cap 2 is fitted to the casing 1.- The casing is provided at its `extreme end adjacent the pen 4 with a thread 30, a shoulder 31 adjacent: the inner end of thread 30, and a tapered portion 32 converging from the shoulder 31. Seated 'against vthe shoulder 31 is a rubbery Washer 33. The cap 2 is provided with a threaded portion complementary yto the thread 30, a shoulder complementary to the shoulder 31, and a tapered or beveled'end complementary to the tapered portion 32.'. Thus when the cap 2 is'securedfto the .casing 1,

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crank 21. It will also be noted that the capv 23, when being` removed from the casing, will, through vthe washer 26, beaded end 27k and crank 21, cause the rod 16 to slide longitudinally of its bearings 19 and 22 and thereby withdraw the end of portion 18 from its position between lugs 13 of the pen 4.

Assuming that the cap 2 has been removed,

the pen 4 may then be immersed in ink of sufficient depth to cover the opening 14 in the pen. The compressible bag 5 then be compressed by the rod 16-which will be loscillated about its bearings, such rotation being "accomplished through cap 23 and crank 21.

Viewing Figure 2it will be observed that ro'- tation of the above mentioned compressing lmechanism in a counterclockwise direction,

will cause the bag or container 3 to be compressed and thereby force a substantial amount of air in such bag to pass out through the feed opening 1() in plug 9 and'aperture 14 in penl 4. The' broken lines in Figure 2 indicate the position of the filling parts when i the bag is fully compressed. Thereupon the rod 16 may be'rotated in a clockwise direction relative to Figure 2 by the mechanism previously described. The bag 3 will then re turn to its normal position indicated in Figure 1 and the suction causedby the return of such bag to its normal position will draw the ink to the interiorthe'reof through aperture 14 and opening 10.

yWhen the pen hasfbeen supplied with ink in the manner just described, the cap 23 may be threaded upon the casing 1 and thus cause Athe rod 16 t0 return to its position shown in Figure 1, thereby moving the end 18 of the rod to substantially close the opening 14.

' The pen will then be ready for use. i

In writing with the pen, pressure upon the nib will cause the divided portions thereof to leave themargin 7 of the spoon 5. This will permit ink withinthe cavity 11, vformedv by the spoon and pen, to flow, by capillary action,

along lthemargin 7 to the point. .The nib, however, normally remains in contact with the margin 7 of the spoon and thereby keeps ink'within the cavity 11 from Howing to the exterior.

. I claim: Y i

1. Ina fountainpen, the combination with a casing, of a compressible ink container within said casing, a rod lying adjacent said container and slidably journaled in said casing' for axial movement, said rod having a crank arm extending exteriorly of said casing, and a cap for said casing normally concealing s-aid arm and removable axially of the casing, said cap being rotatably connected with said arm and xed against axial movement thereon, whereby when said cap is removed from said casing said rod will be moved axially.

2. In a fountain pen, the combination with a casing having a pen provided with an ink supply opening, of a compressible ink container `communicating with said opening, a rod lying adjacent said container and journaled in saidcasiiig for sliding movement and for oscillatory movement about said journal, said rod having a portion normally closing said opening, and means for sliding and oscillating said rod, whereby said rod maybe moved to open said opening and to compress said container.

3. In a fountain pen, the combination with a casing having a pen provided with an ink f supply opening, of a compressible ink containercoinmuiiicatiiig with said opening,l a rod lying adjacent said container and journaled in said casing for sliding movement and for oscillatory movement about said journal, said rod having one end normallyclosing said opening and having the other end extended exterorly of said casing, and a cap normally concealing the extended end and secured' thereto, said cap being removably engage# able with said casing, whereby said rod may be moved axially and oscillated about said journal.

4. .In a fountain pen, the combination with a casing having a fountain pen provided with an ink supply opening, of a compressible ink container communicating with said opening, a rod lying adjacent said container and journaled in said casing for sliding movement and for oscillatory movement about said journal,'sa id rod having one end normally closing said opening and having the other end provided with a crank exteriorly of Asaid cas-` ing, and a cap normally concealing said crank and secured thereto, said cap being removably engageable with said casing, whereby when said cap is removed from said casing, said rod may be moved axially and oscillated about said journal. f

5. In a fountain pen, the combination with a casing having a fountain pen provided with an ink supply opening, of a compressible ink container communicating with said opening, a rod lying adjacent said .container and journaled in said casing for sliding movementand for oscillatory movement aboutl said journal, said rod having one end normally closing said opening and having the other end: provided with a crank exteriorly of said cas` ing, and a cap normally concealingsaid crank and secured thereto forrotation thereon, said 'cap'being threadably engageable with said casing.

lili@ 6. In a fountain pen, the combination with a casing having a pen provided with an ink supply opening, of a compressible ink container communicating with said opening, a rod lying adjacent said container and slidably journaled in said casing and oscillatable about said journal, said rod having one end normally closing said opening and having the other end provided with a crank exteriorly of said casing, whereby said rod may be molved axially and oscillated about said journa 7. In a fountain pen, the combination with a casing having a pen provided with an ink supply opening, of a compressible ink container communica-ting with said opening, a

rod lying adjacent said container and oscillatably journaled in said casing for oscillatory movement thereabout, said rod having one end normally closing said opening and having the other end provided with a Crank, whereby said rod may be oscillated.

8. In a fountain pen, the combination with a barrel, of a compressible ink container in said barrel, a pen point projecting from said barrel and communicating with said container; said pen comprising a pen point proper provided with an opening, a spoon having its margin normally contacting throughout with the margin of said pen proper, whereby to form an ink receiving cavity within said pen communicating with said container; and means for compressing said container, said means normally closing the opening in said pen proper and leaving said opening unobstructed when said container is under compression.

9. A pen point for a fountain pen provided with an aperture in its back a spoon shaped ink holder, arranged with the pen shank to form a generally cylindrical barrel, a hollow pen holder provided with a centrally apertured plug fitted to said barrel, said aperture placing the hollow of said holder in communication with the interior of said barrel, and a valve for the pen aperture.

l0. A pen point for a fountain pen provided with a filling aperture, a hollow holder provided with a compressible bag, and a bag compressing member adapted to also serve as a valve for Said filling aperture.

l1. A pen point for a fountain pen provided with a filling aperture, a hollow holder provided with a compressible bag, and a bag compressing member adapted to also serve as a valve for said filling aperture, said pen having valve seat projections flanking said aperture.

JOHN MUCK. 

